Egbert bailey



R. BAILEY.

Ore Mill.

No. 645060. Patented Apr, V23,v 1867.

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Witnesses: Y

Inventor:

AM.PHDTD'LITHD.CON Y. (DSBC'RNEE PROCESS.)

` to ALL WHoM 1T MAY ooNoERN;

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3 Be it known that I, ROBERT BAILEY, of Idaho City, Boise county, Idaho, have invented a new and useful Improvement in Quartz-Crushers; and I do hereby declare that the following is a full, clear, and exact description thereof,` which will enable others skilled in the'art to makeand use the same, reference being had to the accompanying drawing, forming part of this specification, in which-A Figure I is a side elevation with part of the inside arrangement exposed.

Figure I? is a vertical cross-section on the line :z: as.

Similar letters of reference indicate like parts.

This invention consists in constructing a rotary battery 'for crushing gold and other ores forthe extraction ofthe metals they may contain by amalgamation with quicksilver, the object of whichv is to combine the principle of. action of the ordinary stamp-battery for breaking or crushing the rock by a blow with that of the Mexican arastra, which reduces it to a fine powder by friction or rubbing. This object is accomplished by means of a revolving cylindrical mortar-bed enclosed in a suitable casing of Wood or metal running on friction-rollers,

composed in part internally of rock and cast-iron dies tted together so as to form irregular inclined planes on the inside, and of one or more loose cast-iron blocks or stamps of a cubical form enclosed inl the cylindrical mortar-bed, which are lifted by its revolutions and do the work of crushing and grinding by sliding and tumbling about among'the rock placed within it. It is a cheap and eiective machine for the purpose, which is especially adapted to interior districts Where transportation is expensive, as it can be made principally of materials on the ground. Y

A is the cylinder or case .enclosing the battery of rock and iron, constructed of wood properly braced and secured with iron. B is an exterior rim or casing, in which is hung a series of friction-rollers, a a a, between the rim B and the battery-case A, against lwhich they bear when it revolves. -b bb. represent graniite or other hard rock blocks enclosed antd bedded in the periphery of Vease A. c a c are cast-iron dies or blocks, shown in red, and itted betweenv the rock blocks, the inside faces of both of which form irregular sides or inclhx-ed planes relatively' to each other and to any diameter of the cylinder. They are dove-tailed to each other and secured by keys or bolts or in any suitable manner. d ol are loose cubes or blocks of cast iron, 'of any proper size and weight. The cylinder is rotated by segment gearing on the side Worked by apinion on a shaft connected by a drum or pulley with the prime mover, or directly by a belt from thedrutu or pulley around the cylinder itself. The quartzl or other ores areintroduced into the cylinder through the opening C in the middle of the sides of the cylinder, and when itrevolves the cubical blocks or stamps d d climb up the inclined sides of the rook and iron bed, slidingr among the ores, and rubbing or grinding them on the flat surfaces until they arethro-wn back from the various elevations to which they are lifted inthe operation, thus. falling with crushing force upon the rock ores. A stream of water flows into the-cylinder through a pipe introduced in the opening C and passes off, carrying with it the ground material or ne powder to which the ores are reduced through the circular sieve D D in the sides surrounding the opening C, falling into a sluice below leading to any suitable apparatus for saving the silver or gold by amalgamation, or to a receiving bank for special treatment. vMercury may be put into the mortarfbed, where it Willbe eiectually brought in contact with the tine particles'of the precious metal and amalgamate them. The mortar-bed in the cylinder may be divided into two or more compartments, with a cubical iron stamp, 0l, in each compartment. 'i

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. I claim the construction of the rotary mortar-bed enclosed Within the case'A, made of blocks of rock, Z) b Z7, forming inclined planes of irregular dimensions on their inside surfaces, combined with cast-iron dies cee, tted in and secured to them, arranged and applied as and for the purpose herein described. x

2. I claim the cubical stamped, in combination With the revolving` mortar-bed, constructed and operated together in the manner and for the purposes herein set forth.

ROBERT BAILEY.

l Witnesses:

JAMEs W. GRIFFIN; B. M. DUnBEn. 

